body{
  font-size: 18px;
  font-family: Arial;
}
 h1 {
  font-size: 2.1em;
  font-family: Georgia;
}
h2 {
  font-size: 1.5em;
}
h3 {
  font-size: 1.5em;
}
.para-cent {
  padding-right: 25%;
  padding-left: 25%;
  max-width: 80%;
}
@media only screen and (max-width: 600px) {
  .para-cent {
  padding-right: 5%;
  padding-left: 5%;
  max-width: 90%;}
}